prefetch-bench-new
AMD Athlon II X2 245 testing with a ASUS M4A78 (2301 BIOS) and ECS AMD Radeon HD 7450 on Debian testing via the Phoronix Test Suite.


with prefetch 2: 

	Processor: AMD Athlon II X2 245 @ 2.90GHz (2 Cores), Motherboard: ASUS M4A78 (2301 BIOS), Chipset: AMD RX780/RX790 + SB7x0/SB8x0/SB9x0, Memory: 4096MB, Disk: 120GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DL003-9VT1, Graphics: ECS AMD Radeon HD 7450, Audio: Realtek ALC887, Network: Realtek RTL8111/8168/8411

	OS: Debian testing, Kernel: 5.6.0-proper-rmw (x86_64), Compiler: GCC 9.3.0, File-System: ext4

without prefetch: 

	Processor: AMD Athlon II X2 245 @ 2.90GHz (2 Cores), Motherboard: ASUS M4A78 (2301 BIOS), Chipset: AMD RX780/RX790 + SB7x0/SB8x0/SB9x0, Memory: 4096MB, Disk: 120GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DL003-9VT1, Graphics: ECS AMD Radeon HD 7450, Audio: Realtek ALC887, Network: Realtek RTL8111/8168/8411

	OS: Debian testing, Kernel: 5.6.0-proper-rmw (x86_64), Compiler: GCC 9.3.0, File-System: ext4

with prefetch 4: 

	Processor: AMD Athlon II X2 245 @ 2.90GHz (2 Cores), Motherboard: ASUS M4A78 (2301 BIOS), Chipset: AMD RX780/RX790 + SB7x0/SB8x0/SB9x0, Memory: 4096MB, Disk: 120GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DL003-9VT1, Graphics: ECS AMD Radeon HD 7450, Audio: Realtek ALC887, Network: Realtek RTL8111/8168/8411

	OS: Debian testing, Kernel: 5.6.0-proper-rmw (x86_64), Compiler: GCC 9.3.0, File-System: ext4

new with prefetch 4: 

	Processor: AMD Athlon II X2 245 @ 2.90GHz (2 Cores), Motherboard: ASUS M4A78 (2301 BIOS), Chipset: AMD RX780/RX790 + SB7x0/SB8x0/SB9x0, Memory: 4096MB, Disk: 120GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DL003-9VT1, Graphics: ECS AMD Radeon HD 7450, Audio: Realtek ALC887, Network: Realtek RTL8111/8168/8411

	OS: Debian testing, Kernel: 5.6.0-proper-rmw (x86_64), Compiler: GCC 9.3.0, File-System: ext4

new2 with prefetch 4: 

	Processor: AMD Athlon II X2 245 @ 2.90GHz (2 Cores), Motherboard: ASUS M4A78 (2301 BIOS), Chipset: AMD RX780/RX790 + SB7x0/SB8x0/SB9x0, Memory: 4096MB, Disk: 120GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DL003-9VT1, Graphics: ECS AMD Radeon HD 7450, Audio: Realtek ALC887, Network: Realtek RTL8111/8168/8411

	OS: Debian testing, Kernel: 5.6.0-proper-rmw (x86_64), Compiler: GCC 9.3.0, File-System: ext4

new2 with prefetch 2: 

	Processor: AMD Athlon II X2 245 @ 2.90GHz (2 Cores), Motherboard: ASUS M4A78 (2301 BIOS), Chipset: AMD RX780/RX790 + SB7x0/SB8x0/SB9x0, Memory: 4096MB, Disk: 120GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DL003-9VT1, Graphics: ECS AMD Radeon HD 7450, Audio: Realtek ALC887, Network: Realtek RTL8111/8168/8411

	OS: Debian testing, Kernel: 5.6.0-proper-rmw (x86_64), Compiler: GCC 9.3.0, File-System: ext4

new2 without prefetch: 

	Processor: AMD Athlon II X2 245 @ 2.90GHz (2 Cores), Motherboard: ASUS M4A78 (2301 BIOS), Chipset: AMD RX780/RX790 + SB7x0/SB8x0/SB9x0, Memory: 4096MB, Disk: 120GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DL003-9VT1, Graphics: ECS AMD Radeon HD 7450, Audio: Realtek ALC887, Network: Realtek RTL8111/8168/8411

	OS: Debian testing, Kernel: 5.6.0-proper-rmw (x86_64), Compiler: GCC 9.3.0, File-System: ext4


Flexible IO Tester 3.18
Type: Sequential Read - Engine: IO_uring - Buffered: No - Direct: Yes - Block Size: 32KB - Disk Target: /mnt
MB/s > Higher Is Better
with prefetch 2 ....... 49.2 |======================================
without prefetch ...... 44.5 |==================================
with prefetch 4 ....... 55.3 |==========================================
new with prefetch 4 ... 46.5 |====================================
new2 with prefetch 4 .. 63.9 |=================================================
new2 with prefetch 2 .. 53.7 |=========================================
new2 without prefetch . 56.6 |===========================================


Flexible IO Tester 3.18
Type: Sequential Read - Engine: IO_uring - Buffered: No - Direct: Yes - Block Size: 32KB - Disk Target: /mnt
IOPS > Higher Is Better
with prefetch 2 ....... 1571 |======================================
without prefetch ...... 1422 |==================================
with prefetch 4 ....... 1767 |==========================================
new with prefetch 4 ... 1485 |====================================
new2 with prefetch 4 .. 2043 |=================================================
new2 with prefetch 2 .. 1715 |=========================================
new2 without prefetch . 1809 |===========================================


Flexible IO Tester 3.18
Type: Sequential Read - Engine: IO_uring - Buffered: No - Direct: Yes - Block Size: 64KB - Disk Target: /mnt
MB/s > Higher Is Better
with prefetch 2 ....... 53.1 |==========================================
without prefetch ...... 53.9 |==========================================
with prefetch 4 ....... 50.4 |========================================
new with prefetch 4 ... 50.6 |========================================
new2 with prefetch 4 .. 53.1 |==========================================
new2 with prefetch 2 .. 59.1 |==============================================
new2 without prefetch . 62.4 |=================================================


Flexible IO Tester 3.18
Type: Sequential Read - Engine: IO_uring - Buffered: No - Direct: Yes - Block Size: 64KB - Disk Target: /mnt
IOPS > Higher Is Better
with prefetch 2 ....... 846 |===========================================
without prefetch ...... 859 |===========================================
with prefetch 4 ....... 802 |========================================
new with prefetch 4 ... 805 |========================================
new2 with prefetch 4 .. 845 |==========================================
new2 with prefetch 2 .. 943 |===============================================
new2 without prefetch . 995 |==================================================


Flexible IO Tester 3.18
Type: Sequential Write - Engine: IO_uring - Buffered: No - Direct: Yes - Block Size: 32KB - Disk Target: /mnt
MB/s > Higher Is Better
with prefetch 2 ....... 109 |==============================================
without prefetch ...... 106 |=============================================
with prefetch 4 ....... 112 |===============================================
new with prefetch 4 ... 110 |===============================================
new2 with prefetch 4 .. 118 |==================================================
new2 with prefetch 2 .. 115 |=================================================
new2 without prefetch . 113 |================================================


Flexible IO Tester 3.18
Type: Sequential Write - Engine: IO_uring - Buffered: No - Direct: Yes - Block Size: 32KB - Disk Target: /mnt
IOPS > Higher Is Better
with prefetch 2 ....... 3468 |=============================================
without prefetch ...... 3381 |============================================
with prefetch 4 ....... 3571 |==============================================
new with prefetch 4 ... 3509 |=============================================
new2 with prefetch 4 .. 3786 |=================================================
new2 with prefetch 2 .. 3657 |===============================================
new2 without prefetch . 3613 |===============================================


Flexible IO Tester 3.18
Type: Sequential Write - Engine: IO_uring - Buffered: No - Direct: Yes - Block Size: 64KB - Disk Target: /mnt
MB/s > Higher Is Better
with prefetch 2 ....... 121 |===============================================
without prefetch ...... 122 |===============================================
with prefetch 4 ....... 123 |================================================
new with prefetch 4 ... 123 |================================================
new2 with prefetch 4 .. 129 |==================================================
new2 with prefetch 2 .. 128 |==================================================
new2 without prefetch . 129 |==================================================


Flexible IO Tester 3.18
Type: Sequential Write - Engine: IO_uring - Buffered: No - Direct: Yes - Block Size: 64KB - Disk Target: /mnt
IOPS > Higher Is Better
with prefetch 2 ....... 1929 |==============================================
without prefetch ...... 1949 |==============================================
with prefetch 4 ....... 1963 |===============================================
new with prefetch 4 ... 1956 |===============================================
new2 with prefetch 4 .. 2055 |=================================================
new2 with prefetch 2 .. 2050 |=================================================
new2 without prefetch . 2056 |=================================================


FS-Mark 3.3
Test: 1000 Files, 1MB Size
Files/s > Higher Is Better
with prefetch 2 ....... 12.2 |===============================================
without prefetch ...... 12.2 |===============================================
with prefetch 4 ....... 12.3 |===============================================
new with prefetch 4 ... 12.4 |================================================
new2 with prefetch 4 .. 12.7 |=================================================
new2 with prefetch 2 .. 12.5 |================================================
new2 without prefetch . 12.5 |================================================